What ALTRAD ENDEL does

ALTRAD ENDEL (legal entity: ENDEL SAS) is a French provider of industrial maintenance, modification, construction, and dismantling services to the energy and process industries, headquartered at Tour Franklin in Paris La Défense and operating through 76 agency locations across France plus international offices in the UK, Switzerland, the UAE, Belgium, Guinea, South Africa, and Brazil. Founded in 1835 and integrated into the ALTRAD Group in 2022, the company reports approximately 4,696 employees and €665 million in annual turnover. ALTRAD ENDEL teams participated in the construction of virtually all reactors of the French nuclear power fleet and continue to serve as a primary maintenance and life-extension contractor for EDF under the Grand Carénnage program.

The company's capabilities span the full lifecycle of industrial and nuclear installations: engineering and studies, infrastructure construction, industrial maintenance and modification, and transfers and dismantling. These are delivered through a platform-plus-subsidiary model in which the parent provides integrated project execution and a network of specialist subsidiaries — ACE (manufacturing), CERAP Prévention (radiological protection and risk management), ENDEL SRA (nuclear process maintenance and teleoperated tooling), TENEO and METAL CONTROL (non-destructive and destructive testing), MERCIER Industrie (precision machining, acquired June 2025), and L'École des Métiers (vocational training). Notable proprietary technologies include ENDEL SRA's miniaturized steam generator inspection robot and CERAP's RadLive real-time radiological dosimetry monitoring system, both developed with France Relance grants.

ALTRAD ENDEL generates revenue predominantly through professional services: long-term industrial maintenance contracts, project-based construction and modification works (e.g., the 7-year, 8-unit EAS-ND safety circuit installation program for EDF), specialized nuclear services exported to roughly ten countries, and vocational training delivered by L'École des Métiers. Pricing is not publicly disclosed and is negotiated bespoke per contract. The customer base is concentrated in large enterprise and public-sector operators — primarily EDF, alongside TotalEnergies, Veolia, ALBIOMA, GNVERT, ArcelorMittal, Orano, and the French Navy — with go-to-market executed through dedicated enterprise field sales, multi-year framework agreements, and participation in major industry events such as the World Nuclear Exhibition.

Name

ALTRAD ENDEL

Legal name

ENDEL SAS

Website

https://altradendel.com

Company type

Private

Founded year

1835

Operating status

Operating

Short description

ALTRAD ENDEL is a French industrial maintenance and energy services provider (~4,696 employees, €665M revenue, 76 agency locations) serving nuclear, petrochemical, and process-industry operators with engineering, construction, maintenance, and dismantling services. Wholly-owned by ALTRAD Group since 2022.

Ownership category

akta.pro rank

Product category

Industrial Maintenance Services

NAICS

Electronic and Precision Equipment Repair and Maintenance (811210), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), X-Ray Apparatus & Tubes & Related Irradiation Apparatus (3844), General Industrial Machinery & Equipment (3560)

akta.pro primary industry

In-Service Inspection (ISI) & NDE (ASME Code, Ultrasonics, Eddy Current) (EUAKABAF)

akta.pro secondary industries

Quality Assurance Programs & Nuclear Quality Standards (ASME NQA-1, ISO 9001, IAEA) (EUAKAEAC), Switchgear, Breaker & Buswork Retrofit Services (AIS/GIS) (EUAEALAF)

Keywords

• Industrial maintenance services
• Nuclear energy services
• Non-destructive testing
• Radiation protection solutions
• Precision machining manufacturing

Headquarters

HQ city

Bois-colombes

HQ country

France

HQ region

Europe

Offices10 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Industrial Maintenance & Modification Services: Core revenue stream providing preventive and corrective maintenance, modifications, and operational maintenance engineering for nuclear and industrial facilities. Services include pipework, welding, mechanics, boilermaking, valve work, rigging, and electromechanical robotics. Recurring revenue through long-term maintenance contracts with major energy clients.
2. Construction & New Infrastructure Works: Engineering, design, and construction of new industrial infrastructure including nuclear facilities, petrochemical plants, and energy installations. One-time project-based revenue with significant contract values (e.g., EAS-ND project spanning 7 years across 8 nuclear units).
3. Vocational Training — L'École des Métiers: L'École des Métiers provides trade-specific initial and continuing professional training for the nuclear and industrial sectors. Operates at the Avoine site (near Chinon) and deploys mobile training modules across all French regions. Also targets international partners. Revenue from training fees, with support from France Relance (€2 million grant for expansion). Key figures: 60,000 training hours/year, 600 trainees/year.
4. Specialized Subsidiary Products & Services: Revenue from specialized subsidiaries: ACE (manufacturing and precision machining with 8,000 m² workshops), CERAP Prévention (radiological prevention, OCR services, PCR training), ENDEL SRA (teleoperated tooling, launch cleaning, foreign object extraction), TENEO & METAL CONTROL (NDT/END services, destructive testing via Cofrac-accredited laboratory), and MERCIER INDUSTRIE (precision machining and welded mechanical parts, >€10 million annual turnover).
5. Specialist Nuclear Services: ENDEL SRA generates revenue through highly specialized nuclear services including steam generator video inspection and launch cleaning (world reference with 4,000+ steam generators inspected globally), teleoperated tooling development, and foreign object search and extraction. Operates in approximately 10 countries across Europe, Asia, South Africa, and Brazil.

Go-to-market motion3 records

Distribution channels5 records

Marketing channels6 records

Core offering

ALTRAD ENDEL is a French industrial maintenance and energy services company delivering integrated solutions for nuclear, petrochemical, steel, naval and energy sector operators across engineering and studies, infrastructure construction, industrial maintenance and modification, transfers/dismantling and vocational training. Its specialist subsidiaries (ACE for manufacturing and maintenance, CERAP Prévention for radiological protection, ENDEL SRA for nuclear process inspection, TENEO and METAL CONTROL for NDT/DTL, MERCIER Industrie for precision machining) provide a fully integrated value chain from precision manufacturing through robotic nuclear maintenance.

Product overview

ALTRAD ENDEL is the parent company — a French leader in industrial maintenance and energy services with 4,696 employees, €665M turnover, and 76 sites. The portfolio is structured as a platform-plus-specialist-subsidiaries model: ALTRAD ENDEL provides integrated solutions across the full chain (engineering, construction, maintenance, transfers/dismantling), while specialist subsidiaries extend capabilities in targeted domains. These include ACE (manufacturing/maintenance), CERAP Prévention (radiological protection), ENDEL SRA (nuclear process operations), TENEO & METAL CONTROL (non-destructive and destructive testing), and MERCIER Industrie (precision machining, acquired 2025). The L'École des Métiers training centre supports workforce development. Notable technology products include ENDEL SRA's robotised steam generator inspection tool and CERAP Prévention's RadLive real-time radiological monitoring system.

Differentiator

Problem solved

Functional benefit

Products and services

• Industrial Maintenance & Modification Services Preventive and corrective industrial maintenance, modification and operational maintenance engineering for nuclear and industrial installations, including pipework, welding, mechanics, boilermaking, valve work, rigging and electromechanical robotics. Delivered as recurring long-term maintenance contracts with major energy clients.
• Construction & New Infrastructure Works Engineering, design and construction of new industrial infrastructure including nuclear facilities, petrochemical plants and energy installations. One-time project-based engagements delivered through direct field sales and tender processes.
• L'École des Métiers Trade School Training Vocational initial and continuing training program for the nuclear and industrial sectors, operating from the Avoine site (Indre-et-Loire) with mobile modules across France. Delivers 60,000 training hours per year to 600 trainees across 45 trade-oriented courses including 4 VR/AR modules in pipework, boilermaking, valve work and welding.
• ENDEL SRA Nuclear Process Inspection Services Specialized nuclear process services including steam generator launch cleaning, video examination (ETV), teleoperated tooling development and foreign object search and extraction. ENDEL SRA is a world reference for steam generator inspection with 4,000+ steam generators inspected globally.
• ACE Manufacturing & Industrial Maintenance Services Boiler-making, piping and industrial mechanical engineering services delivered from 8,000 m² of workshops across three sites near Cherbourg-en-Cotentin. Supports routine and complex high-value manufacturing and maintenance operations for naval, energy and industrial clients.
• CERAP Prévention Radiological Protection Services Certified radiological protection, occupational health and safety, nuclear measurement, instrumentation and environmental services, including Radiological Protection Advisor (PCR) services for energy, research, defence, medical and aerospace sectors.
• TENEO & METAL CONTROL NDT and DTL Testing Services Non-destructive testing (NDT/CND) using radiography, ultrasonics, magnetic particle testing, penetrant testing, eddy currents, leak testing and visual examinations via TENEO, plus destructive testing (DTL) by METAL CONTROL's Cofrac-accredited laboratory covering chemical analyses, mechanical testing, metallographic examination and compliance verification. Active in nuclear, Oil & Gas, petrochemical, aeronautical and railway sectors.
• MERCIER Industrie Precision Machining Services Precision machining and manufacturing of welded mechanical parts, ISO 9001 certified, based in Ouzouer-sur-Loire, France. Supports new nuclear construction programs (Hinkley Point C), French nuclear fleet life extension and general industrial projects. Annual turnover exceeds €10 million.
• CNG/LNG Refueling Station Construction Construction of CNG refueling stations including stainless steel piping, BP/HP skid design and installation at up to 250-bar service pressure, plus compressor and dispenser installation under ATEX safety standards.
• Endel Supplier Portal Supplier self-service portal at pafv2.endel.fr enabling procurement management and supplier onboarding for ALTRAD ENDEL's supply chain, including the [email protected] contact channel.

Quantifiable outcome

• 4,000+ steam generators inspected and launched worldwide
• +4 more outcomes

Named customers12 records

Segments8 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability7 records

Feature4 records

Partnerships

Six partnerships are on record, tiered supporting, core and minor.

• COCHEZsupportingImplementation/ SI/ Consulting Partner · 1 January 2024Long-standing operational partner for handling operations (extraction and placement of steam generator bundles) in ALTRAD ENDEL's nuclear maintenance projects. COCHEZ specializes in heavy lifting and handling services critical to steam generator replacement operations at EDF nuclear plants.
• TractebelcoreStrategic or Co-development Partner · 30 November 2023ALTRAD ENDEL and Tractebel signed a 10-year cooperation agreement on November 30, 2023, to jointly support EDF's long-term nuclear operation program (Grand Carénage) and international nuclear projects. The partnership combines Tractebel's 60+ years of nuclear engineering expertise with ALTRAD ENDEL's operational and maintenance execution capabilities in civil engineering, mechanics, project management, and construction. The partners have collaborated for 7 years prior to this formal extension, successfully supporting EDF's primary circuit component replacement program.
• IRUP (Institut de Recherche Universitaire Professionnalisé)coreStrategic or Co-development PartnerOver 20-year strategic partnership between ALTRAD ENDEL SRA and IRUP for vocational training in nuclear trades through alternating education programs. IRUP produces professionals from technicians to senior managers specialized in their fields. The partnership was recognized with the 'Prix de l'Entreprise Partenaire NIT' award in 2023. ALTRAD ENDEL provides real-world training environments and expertise while IRUP delivers accredited educational programs.
• CERAP Prévention / Terminus des Sciences — 'Itinéraire d'un Atome' Board GameminorStrategic or Co-development PartnerCERAP Prévention co-created the educational board game 'Itinéraire d'un Atome' (Atom's Journey) with the Terminus des Sciences association, EDF Flamanville, Orano La Hague, and Andra CSM. The game, comprising 37 tiles and 56 tokens, reconstructs the nuclear fuel cycle and how a nuclear power plant works. It targets students, nuclear professionals, and the general public. Released under Creative Commons BY-NC-ND license for free educational use. CERAP offers workshop animation services based on the game.
• LEROUX & LOTZ TECHNOLOGIESsupportingImplementation/ SI/ Consulting PartnerALTRAD ENDEL RÉUNION partnered with LEROUX & LOTZ TECHNOLOGIES (boiler design, supply, and retrofit specialist) for the ALBIOMA thermal power plant transition project in La Réunion. LEROUX & LOTZ designed, supplied, and managed the boiler unit retrofit while ALTRAD ENDEL handled logistics, dismantling, and new equipment installation.
• CMN (Constructions Mécaniques du Nord)supportingStrategic or Co-development PartnerCMN co-founded ACE (Ateliers de Construction et d'Entreprises) alongside ENDEL, combining naval/military mechanical construction expertise with industrial maintenance capabilities. ACE operates near Cherbourg-en-Cotentin with 8,000 m² of workshops.

Scale indicators14 records

Recent moves7 records

Expansion highlights7 records

Direct peers

• ONET Technologies: ONET Technologies is a French nuclear services specialist providing decontamination, dismantling, and radiological protection services to EDF, Orano, and CEA — directly overlapping ALTRAD ENDEL's CERAP Prévention and ENDEL SRA offerings.
• SPIE Nucléaire: SPIE Nucléaire is the nuclear division of SPIE, a major French multi-technical services group providing maintenance, electrical, and instrumentation services to French nuclear operators with similar field workforce and client base.
• Boccard: Boccard is a French industrial piping and process equipment specialist serving nuclear, energy, and process industries with capabilities in boiler-making, piping, and welding comparable to ALTRAD ENDEL's industrial maintenance offerings.
• Nuvia: Nuvia (subsidiary of Soletanche Freyssinet/VINCI) provides nuclear engineering, radiological protection, and waste management services across Europe, directly competing in radiological protection alongside ALTRAD ENDEL's CERAP Prévention.
• Assystem: Assystem is a French engineering and nuclear services company providing technical assistance and project management to EDF and other nuclear operators, with comparable engineering, construction, and modification capabilities.

Broad incumbents

• Framatome: Framatome is a major nuclear reactor services and equipment provider controlled by EDF, directly competing with ALTRAD ENDEL in nuclear maintenance, modification, and component replacement services across the French fleet.
• Westinghouse (Brookfield): Westinghouse is a major global nuclear services provider offering fuel, services, and modification solutions, providing relevant benchmarking for ALTRAD ENDEL's international nuclear ambitions via ENDEL SRA's global inspection business.
• Orano: Orano is a French nuclear fuel cycle and services group that operates fuel cycle facilities and provides dismantling and waste management services to CEA and other clients, intersecting with ALTRAD ENDEL's decommissioning and radiological services.
• Vinci Energies (Actemium): Vinci Energies provides multi-technical industrial and energy services including nuclear maintenance through its Actemium brand, operating as a larger and more diversified incumbent in overlapping segments.

Others

• Tractebel (ENGIE): Tractebel is ALTRAD ENDEL's strategic cooperation partner (10-year agreement signed 2023) providing nuclear engineering consultancy to EDF, and represents both a complementary capability and an adjacent competitive player in the broader nuclear services market.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/altrad-endel
• Xx.com/ALTRADENDEL

Compliance12 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ALTRAD ENDEL